Study on spatial-temporal pattern evolution and influencing factors of urban haze pollution PM2.5 in the Yangtze River Economic Belt
ZENG Hao1， DING Lei2
1.Resources and Environmental Economics Research Center， East China University of Technology， Nanchang 330013， China；2.Institute of Environmental Economics Research， Ningbo Polytechnic， Ningbo， Zhejiang 315800， China
Abstract：Global Geary Index C and geographical weighted regression model GWR were used to study the spatial-temporal pattern and influencing factors of urban smog PM2.5 in the Yangtze River economic belt. The results show that PM2.5 of urban smog pollution in the Yangtze River economic belt from 2005 to 2016 is positively correlated with each other， and the spatial pattern of PM2.5 is obviously concentrated and strengthened. The hot spots are mainly distributed in the lower reaches of the common economic belt， and the number and scope of the hot spots are shrinking. The sub-hot spots are significantly reduced while only around the hot spots. The sub-cold spots move from the upper reaches of the Yangtze River Economic Belt to the middle and lower reaches of the Yangtze River Economic Belt， and the scope of the cold spots shows a significant expansion trend. In addition， it is found that the spatial correlation distance of urban smog in the Yangtze River economic belt is 867 km， and the spatial concentration distribution of urban smog pollution in the Yangtze River economic belt is significant. Based on the analysis of the influencing factors of urban smog pollution in the Yangtze River Economic Belt， it is concluded that the industrial structure is the biggest influencing factor of urban smog pollution in the Yangtze River economic belt， followed by economic development. There is a negative correlation between the urban smog pollution and the green coverage rate in the built-up areas. The influence of population density has gradually expanded from the lower and middle reaches of the Yangtze economic belt to some upstream areas. The traffic and transportation situation has a great influence on the lower reaches of the Yangtze River Economic Belt. According to the difference of influencing factors of haze pollution in different regions， it's put forward that the Yangtze economic belt should pay more attention to joint prevention and control and stick to the strategy of high-quality development.
曾 浩,丁 镭. 长江经济带城市雾霾污染PM2.5时空格局演变及影响因素研究[J]. 华中师范大学学报(自然科学版), 2019, 53(5): 724-734.
ZENG Hao,DING Lei. Study on spatial-temporal pattern evolution and influencing factors of urban haze pollution PM2.5 in the Yangtze River Economic Belt. journal1, 2019, 53(5): 724-734.
2019, Vol. 53 
